Button-drilling machine



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BUTTON DRILLING MAGHINB. No. 593,061. Patented Nov.2,1897.

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J.S.TARR. BUTTON DRILLING MACHINE. 10.593,061. Patented Nov. 2,1897.

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llNiTnn STATns FnTnivT @Trina JOSEPH S. TARE, OF CLEVELAND, OHIO,ASSIGNGB TO VILLIAM CLARK,

OF ERIE, PENNSYLVANIA.

BUTTON-DRILLING MACHINE.

SPECIFICATION forming part of Letters Patent No. 593,061, dated November2, 189'?.

Application led February l1, 1897. Serial No. 623,006. (No model.)

To @ZZ whom t may con/cern.-

Be it known that I, JOSEPH S. TARR, a citizen of the United States,residing at Cleveland, in the county of Cuyahoga and State of Ohio, haveinvented certain new and useful Improvements in Button-DrillingMachines; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as Will enable others skilledin the art to which it appertains to make and use the saine.

The invention relates to a machine for automatically drilling aplurality of holes in buttons. -The machine ncludesa plurality of chucksfor holding the button-blanks, preferably one more chuck than the numberof holes to be drilled in each button-blank, a plurality of rotatingdrills, one for each hole to be drilled, mechanism for presenting thebuttonblanks successively to the action of the different drills, andmechanism for snccessively discharging the finished buttons from thechucks and for inserting buttonblanks into the empty chucks.

In the drawings, Figure lis a plan View of the machine. Fig. 2 is afront elevation thereof. Fig. 3 is a sectional side View on line 3 3 ofFig. l. Fig. 4 is a sectional side elevation on line Il 4. of Fig. l.Fig. 5 is an enlarged sectional view of onedlalf of the inachine on line5 5 of Fig. 3, and Fig. 6 is an enlarged longitudinal section of themechanism for feeding the buttons to the chucks.

Referring to the parts by letters, A represents the bed of the machine,at the ends of which are the two standards o. a, in which theoperating-shaft B is journaled, and the tivo standards a' of, whichsupport a non-rotatable cylindrical shaft C. This shaft C is aconvenient practical means vfor supporting the various fixed androtating parts, as hereinafter described, but it is not my intention tolimit inyinvention to this particular means for supporting such parts.

D D represent twoiminovable plates which are secured upon this shaft C.These two plates support the adjustable bearings .g of the fourlongitudinallymiovable drill-shafts G, which drillshafts are parallel toeach other and to the shaft C, and these plates also support the slidingplunger V, which forms part of the mechanism for automatically feedingthe buttons to the chucks, which I will presently describe. Thesedrill-shafts and plunger are approximately the saine distance from eachother and from the axis of shaft C.

The bearings g for the drill-shafts are rectangular boxes set into holesd in the plates D D', and these boxes are moved to right or left or downby means of set-screivsg g2 g3, which set-screws also hold the boxes atthe desired distance from the axis of the shaft C. The holes should bedrilled in the buttonblanks at points equidistant from each other and atequal distance from the center of the button blank. These bearing boxesare therefore adjusted up or down or to right or left to bring the axesof the drill-shafts in line with proper point on the button-blank in thelchucks adjacent to said shafts. On each drillshaft is secured anoperating-pulley g4, and each drill-shaft is surrounded by an expansiblecoil-spring Q7, the ends of Which bear against the bearings of the shaftin the plate D and against the hub of this pulley. In the ends of thedrill-shafts are chucks for securing the drills therein.

J represents a plate which is mounted upon the shaft C, upon which it isadapted to slide, but is prevented from turning by a spline. Bolts jscrew into this plate at points Where their heads will engage with therear rounded ends of the drill-shafts. It is obvious that When thisplate is caused to slide upon shaft C to the left, as shoivn in thedrawings, these various bolt-heads will force the drill-shafts to theleft in their bearings and that when this plate is retracted or moved tothe right the springs surrounding the drill-shafts will nieve thein tothe right.

Loosely mounted on the shaft B is a pulley K, driven by a belt 7n' froma counter-shaft, and a belt 7c, which passes around said pulley,likewise passes in a sinuous path around the four pulleys g4, which areattached to the drill-shafts, Wherefore all of the drill-shafts aresimultaneously revolved, although two of them are revolved in onedirection and tWo in the other. This makes no diiference, because thedrills'uf'hich are used to drill the holes in the buttons will operateequally Well when rotated in either direction. The plate IOC J is causedto slide upon the shaft C by means of a fork-lever H, adjustablypivoted, to. the post d2, which rises from the bed-plate; Its front endbears against the right face of the plate J. The rear end of this levercarries a friction-roller 71 which bears against the face of a disk M,having on its face a camfm, which disk is secured to the shaft B. Theshaft B is rotated by means of the pulley b, which is driven from acounter-shaft.

N represents a rotating disk which is mounted upon the shaft C, beingprevented from moving along said shaft by the collar c and the hub r',which is fixed tothe shaft. On the side thereof which faces the drillsare five chucks, arranged at regular intervals. This disk is rotatedone-fifth of an entire revolution every time the shaft B revolves onceby means of the notches n in the edge of said: disk, the pawl P, whichisladapted to engage in said notches, and the crank ou the shatt B, tothe crank-pin of which the rear end of this pawlk is pivoted.

rEhe button-holding chucks consist each: of an adjustably-iixed platen', having a rig-htangled notch. in its inne-r end, which plates aresecured to the face of the disk N by screwsfi, which. pass throughslotsn in said" plates, and theI radially-movable correlative plate n2,having a right-angled` notch in its outer end. The button is heldbetween the twdplates and in these notches. The platen2 is movablysecured to the disk by screws nl, passing through slots a8, and it ismovedradiallyfoutward by mea-ns of a coil-spring n4, whichsurrounds ashank n3 on its inner end. It is moved inward to release-the-button4from the embraceof thechuek by means of a camshaped flange R, whichengages with a triction-wheeln), mounted upon a pin n, which projectsfrom the pla-te n2. This flange-R is secured tothe arm r, which projectsoutward from the hub r', which is fixed-to the-shaft G.

The means for automatically feeding the buttons intothe chucks consistof a sleeve T, which isv longitudinallyT movable` through a hole in theplate D and through another hole inthe boss r2 on the outer end of thearm r. Thediameter of the hole iin this sleeve is a trifie larger thanthe diameter of the buttons. A flat tube -S is secured upon the-end ofthis sleeve. It stands ina nearly vertical position, and, it is in opencommunication with'V the` interiorv of the sleeve, whereforewhenbuttonsare placed in this tube they will; fall by gravity into thesleeve. A plunger V is longitudinally movable in` thesleeve Tin whichyit lits, and in a suitable bearing in the plate D,and itsright-hand endpasses through the plate J, and a coil-spring V surrounds this` plungerandi thrusts endwiseV against a nut o thereon and against the plate J,acting, therefore, to. move the plunger to' the left whenever the` plateJ so-moves as toY permit su'chaction. A pin ft2, which is connected withthe plunger, passes through a longitudinal slot t2 in the sleeve T. Acoil-springt surrounds the left end of the sleeve and thrusts againstthe boss 'r2' and against the lian ge t: upon said sleeve, wherefore thesleeve is moved toward disk N whenever it can so move. Under normalconditions the right end of the slot t2 engages with the pin r2, whichprevents for the time being any move- Ement in that direction.

The parts described operate in the following manner and sequence: Assumethat a but- .ton is in the embrace of each of the chucks carried by diskN and that the drill-shafts have just been retracted after the drillshave gdrilled-` holes in the buttons. The shaft B is constantlyrevolved, and it now operates the pawl P and causes the disk'N to beturned one-fii'th of arevolution. Fig. 3 shows these parts when the diskN is` about' midway between two stopping-points. W'hen the disk Nreaches the position in which it should stop, a tooth w on thespringVengages with a notch asin the periphery of said disk. Beforel the diskreaches this point one of the friction-rollers ng, which is mounted upona Ipin* projecting to the right from the plate n2, engages beneath thecamfiiangel R. This lcauses the particular plate nawhich carries saidroller to be drawn radially inward in opposition to its spring, theresult being that 'the button which had been held between the `twoplates n" 'n2Y is permitted to drop out. .This happens, as beforestated, before the disk N reaches the position where it will stop. `Vhenit does stop, the opening between the lplates n' n2 of the now emptychuck is in `li-ne with the plunger V, as shown in Fig. 5. The buttonsin the embrace of; the other Ach'ucks are. in line with the variousdrills. 'The continued revolution of shaft B causes the cam m of disk Mto'engage with the friction-roller h on4 the lever Il, which causes saidlever to rock upon its'w pivot, with the result of forcing the disk Jtotheleft, whereby the fou-r drill-stems are moved so as to cause "theirdrills to drill holes in the several buttons. At the same time theplunger V is moved to the left by its spring V. As it so sleeve T to theleft until its end strikes the plates n n2; AI further movement of theplunger V which follows pushes. the button in the sleeve out against thedisk N and between the two jaws n/ athereby pushing thespring Z out. Thecam My passes out of engagement with the friction-roller n, whereuponthef springs surrounding the drill-stems move said drill-stems, andconsequently the disk J, to they righ-t.` Jfustv after this movement hasbegun and before it is quite completed the pawl P again begins toy move-the disk N. Almost immediately after this movement begins the roller'n)passes out of engagementA with the flange R, whereupon the .spring n4moves the jaw n2 forward, andthe button is graspedv between the two jawsn n2, having been heldA inposition between them until it was so graspedby the end of the moves it permits the spring 15 to move the IOO IIO

sleeve T. The further backward movement of the plunger V brings the pin'U2 into engagement with the end of the slot t2, whereby the sleeve T isretracted.

The movements above described are repeated indeiinit-ely, the resultbeing that each button is successively presented to the action of eachof the four drills and is iinally automatically released from theclutching-jaws. It will be noticed also that all four drills actsimultaneously, each upon a different button, and that when they aredrilling holes into the buttons a button-blank is beingautomaticallyinserted in the then empty chuck. The four drills areoffset a very little and in different directions from the center of thebutton, wherefore the drills act upon four points cquidistant from thecenter of the button and at equal intervals apart. It Will also benoticed that the sleeve T is moved against plates n 'a2 and thebutton-blank is fed into the empty chuck by the action of springs,whereby the blanks, Whatever be their thickness, are firmly pressedagainst the disk N and between the plates n n2 Without danger ofbreaking any of the coperating parts. Y

The bolts j afford means for changing the normal position of thedrill-shafts to compensate for the Wearing away of the drills. Theadjustable fulcrum of the lever II, which may be secured at any point inthe slot e, furnishes means whereby the throw of the drill-shafts may bevaried as desired.

To insure the discharge of the button from 1 the chucks as they areopened, I secure upon the back of disk N five bent springs Z, whose endsproject through holes uw in the disk between the plates n n2 and bearwith a continuous, but light pressure upon the buttons between saidplaies.

By adjusting the plates n' out or in the chucks are adapted to holdbuttons of different sizes.

Having described my invention, I claimp 1. In a button-drilling machine,in combination,a rotatable ch uok-carryin g disk, mechanism for movingthe same intermittently, a series of self-closing chucks supported atregular intervals on one face of said disk, mech-- anism for openingsaid chucks sequentially, a series of longitudinally-movabledrill-shafts, springs for moving said shafts independen tly avvay fromthe Work, a button-feeding device consisting of a sleeve which isparallel with the drills and in line with the open chuck, and has anopening for the introduction of button-blanks, means for moving the sametoward and from said chuck, a plunger movable in said sleeve, a springfor moving it toward the disk, a plate J for simultaneously governingthe movements of the drill-shafts, feed-sleeve and plunger toward andfrom the disks, and means for moving said plate, substantially as andfor the purpcsespecifled.

2. In a button-drilling machine, in combination, a plurality oflongitudinally-movable drill-shafts, means for holding button-blanks inline therewith, lsprings for independently moving said shafts from theWork, a movable plate which simultaneously moves all of saiddrill-shafts tou-*ard the Work, adjustable bolts carried by said plateand engaging With the ends of the drill-shaft, a lever for moving saidplate, an adjustable fulcrum for said lever, and a cani for operatingsaid lever, suhstantially as and for the purpose specified.

In a button-drilling device, in combination, the disk II carrying on oneface a plurality of equally-spaced self-closing chucks, mechanism formoving said disk intermittently, a plurality of longitudinally-movabledrill-shafts, springs for independently moving said shafts from theWork, means for sequentiall)7 opening the chucks, alongitudinallymovable sleeve T, a vertical tube S which dischargesbutton-blanks singly into the sleeve T, a plunger in sleeve T, the plateJ, through which the rear end of the plunger passes, a nut on said cud,a spring V', the adjustable bolts j, a shaft B, and mechanism operatedby said shaft for moving disk N and plate J, substantially as and forthe purpose specied.

Li. In a buttoudrilling machine, the combination of a plurality ofbutton-holding chucks, and mechanism for sequentially opening them andpresenting the open chuck to the buttonfeeding mechanism, With buttonfeeding mechanism consisting of a longitudinallymovable sleeve, anapproximately vertical tube secured upon and discharging into saidsleeve, a plunger in the sleeve and mechanism for moving the sleeve andplunger toward the open chuck to guide the button in the sleeve andforce it into the open chuck and then WithdrauT said sleeve and plunger,

' substantially as and for the purpose specified.

5. In a button-drilling machine, the combination of a plurality ofbutton-holding chucks, and mechanism for sequentially opening them andpresenting the open chuck to the buttonfeeding mechanism, With buttonfeeding mechanism consisting of a longitudinallymovable sleeve, anapproximately vertical tube secured upon and communicating with theinterior of said sleeve, a plunger in the sleeve, a spring exerting itsforce to move the sleeve toward the open chuck, a pin ou the plungerprojecting into a longitudinal slot in the sleeve, a spring exerting itsforce to move the plunger forward, and means for retracting saidplunger, substantially as and for the purpose specified.

6. In a button-drilling machine, in combination, a rotatable diskcarrying a plurality of button-holding chucks each consisting of a fixedjaw, a movable jaw, a spring for closing said movable jaw, and aprojection 'au on said jaw, and the friction-roller n, a plurality oflongitudinally-mcvable drill-shafts, their operating mechanism, alongitudinally-movable button-feeding sleeve, an arm r in Which saidsleeve is supported, a cam-liange R on IOO IIO

said` arm` forv engaging with the friction-roller wg, a spring formoving the sleeveftoward the open chuck, a. spring-actuated plunger forforcing a button from the sleeve into said open chuck, and means forretracting said sleeve, and plunger substantially as and for:

8. In a button-drilling machine, thefeomlbination: of anintermitten-tly-moving rotating disk, a plurality ofbutton-holdingchucks earried thereby, a plurality of longitudinally'-movable drillshafts and their operati-ng mechanism the plates D and D/havingholesd through themby which they surround said I drillfshafts,bearing-boxes gwithin said holes and embracing said drill-shaftsandset-screws v projecting through said plates intofsaid holes@ CZ andengaging with said bearing boxes,

whereby said bearing-bexesmay be adjusted in any transverse direction,Ysubstantially as and for the purpose specified.

In testimony whereof I affix my signature in presence of two witnesses.l

JOSEPH S. TARE.

Vitnesses E. L. TnURsToN, ALBERT H. BATES.

